IRIS P522 manual Communicating with Modicon PLC, Communication with Human-InterfaceHost Computer

IRIS MODEL P522 APPLICATION MANUAL

Registers Map	Note: Not all models of Modicon PLC’s
	will accept the XMIT loadable module.
4X OR NUMERICAL REGISTERS:	Please consult you local Modicon dealer
	for more information.

400001 Flame Count Of Active Channel (read only)

400002 Processor Status (read only)

400002/0 View head/Channel Selected (0=Channel A) 400002/1 Flame On Relay Status

400002/2 Processor Lockout Status (0=lockout) 400002/3 Panel Access Disabled (0=disabled) 400002/4 4-20 output Status (0=0-40)

400003 Flame On Channel A

400004 Flame On Channel B

400005 Flame Off Channel A

400006 Flame Off Channel B

400007 Gain Channel A

400008 Gain Channel B

400009 IR Analog Gain Channel A

400010 IR Digital Gain Channel A

400011 IR Filter Channel A

400012 UV Gain Channel A

400013 IR Analog Gain Channel B

400014 IR Digital Gain Channel B

400015 IR Filter Channel B

400016 UV Gain Channel B

400017 View Head Type Channel A (read only)

400018 View Head Type Channel B (read only)

400019 Temperature Channel A (read only)

400020 Temperature Channel B (read only) 400021 Time Delay on (Upper nibble = B lower = A) 400022 FFRT (Upper nibble = B lower = A) 400023 Firmware Version # (read only)

0X OR DISCRETE REGISTERS: (All read only)

000001 View head/Channel Selected (0=Channel A)

000002 Flame On Relay Status

000003 Processor Lockout Status (0=lockout)

000004 Panel Access Disabled (0=disabled)

000005 4-20 output Status (0=0-40)

Communicating with Modicon PLC

Each Modicon PLC comes with a Modbus port. The control program can read/write the settings from/to the P520/P522 scanner via this port. A XMIT loadable module is needed to send Modicon func- tions. XMIT loadable module is available from Modicon Inc.

Communication with Human-Interface Host Computer

A number of Modbus drivers for Microsoft Window 95 and NT are available from the third party devel- oper, such as Rockwell Software’s WinTelligent Linx Modicon. A Modicon driver allows applica- tion programs such as Microsoft Excel, Wonderware and RSView to communicate with the P520/P522 scanners directly.

RS-232 to RS-422 CONVERSION

It is necessary to use a RS-232 to RS-422 converter at the host computer. The IRIS COMM converter module can be used, and is recommended because of its photocoupler isolation. The converter must have galvanic ground isolation.

SETTING ADDRESSES

Each P522 must have its own unique address. The address is easy to change. Press the RESET push- button for >2 seconds, causing the P522 to immedi- ately display its address on the four-digit display (0000 to 0063), and change using the UP or DOWN arrow buttons. When the desired address is dis- played, push the STORE button, and the P522 will immediately respond to this new address.

In current software revisions of the processor (ver- sions 3.0 and higher), the baud rate can also be changed when the module address is changed. The baud rate is displayed in the highest two digits of the numeric display (i.e., 4802 is 4800 baud and address 2). To change to 9600 baud, increase the display past 4863. The next display will be 9600, which is 9600 baud, address 0. Then increase the display further to the desired address. To return to 4800 baud, reduce the display below 9600, and set the desired address.

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